The "Official" Sherbourn PA 7-350 Amp Discussion Thread - Page 8 - AVS | Home Theater Discussions And Reviews
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post #211 of 224 Old 09-05-2014, 09:28 AM
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Oh man, I wish I could pick up another one of these brutes. I tried to get a second one during the sale, but by the time I went back they were all gone. Oh well, feel pretty lucky to have one. It's a monster. Someone's going to get a good deal.

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post #212 of 224 Old 09-05-2014, 02:16 PM
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I have to go to Indiana (Kokomo) in a couple weeks for work, so I'm able to meet up with people in Indiana, Michigan and a fair bit of Ohio (Western side)
Hi Jeff.

I live in Indiana and am often in the Indianapolis area. I am seriously considering making a deal with you and meeting somewhere for a cash deal.

David

David Lynch Current Equipment: Marantz AV8801, Proceed HPA3, Parasound HCA-1206, Aerial Acoustics LR5's (LCR), Aerial Acoustics LR3's (sides), RBH in-walls (rears), Seaton Submersive, Marantz VP15s1, 106" Carada BW screen, Oppo BDP-103.
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post #213 of 224 Old 09-18-2014, 11:10 PM
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Question 7-350 Power requirements ?

Hi Guys,

I'm wondering if someone here can kindly help me make the right decision as I am in the middle of installing my system.

My 7-350 is on a dedicated 220V/30A circuit (as required and mentioned in the PA 7-350 manual). However, I am faced with a bit of a dilemma. As I get voltage fluctuations in the power grid, I am thinking of incorporating a voltage stabilizer to get constant 220V at all times. The problem I have is that a 20A stabilizer is reasonably priced but a 30A stabilizer is proving to be far too expensive.

I know lab conditions demands proper 30A at 220V for optimal results but will a 20A stabiliser in the mix be sufficient for movies and music considering the fact that I will be using seven 4 ohm speakers ?

Any help will be appreciated.
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post #214 of 224 Old 09-20-2014, 09:28 AM
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Quote:
Originally Posted by Sam Ash View Post
Hi Guys,

I'm wondering if someone here can kindly help me make the right decision as I am in the middle of installing my system.

My 7-350 is on a dedicated 220V/30A circuit (as required and mentioned in the PA 7-350 manual). However, I am faced with a bit of a dilemma. As I get voltage fluctuations in the power grid, I am thinking of incorporating a voltage stabilizer to get constant 220V at all times. The problem I have is that a 20A stabilizer is reasonably priced but a 30A stabilizer is proving to be far too expensive.

I know lab conditions demands proper 30A at 220V for optimal results but will a 20A stabiliser in the mix be sufficient for movies and music considering the fact that I will be using seven 4 ohm speakers ?

Any help will be appreciated.
I have mine on a dedicated 20amp circuit and I have equipment to monitor what the amperage the amp pulls. I have never seen the amp pull over 10amp. My speakers are 4 ohm 87db. That is playing at reference level. The only way I can see pulling more is if you were trying to pull more amps out of it with a sine wave or if you were running your speakers all in full range. Because of my subs I have all of my speakers crossed over anywhere from 60 to 80 hz.

I hope this helps!
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post #215 of 224 Old 12-09-2014, 07:02 PM
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So are there people that do NOT get a buzz on the PA 7-350? I got mine last year and just got it all connected a few months ago after finally completing my HT. It has a distinct buzz which is being generated from the amp. I have proven this by not only disconnecting all inputs cables, but also by flipping off the breakers to all other devices in the sub panel. So the only thing getting power was the Sherbourn.

The speakers which are connected are not high efficiency speakers. I get the buzz in any of them. VERY DISAPPOINTED. I called Emotive today and spoke to Chad. Not a very courteous person. He said send it back to have them look at it and emailed me an RMA. Then I found this thread with others who have the same buzzing going on.

Did anyone ever send their back in for repair????????

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GR Research LS-9 + LS-C | Denon AVR-4520 11.2 | Sony VPL-HW55ES | DaLite 11' screen | Sanway FP-14000 & FP-10000Q | Sherbourn PA 7-350 | Behringer iNuke NU1000DSP | 8x IB318's | Buttkicker Original(2x), LFE(2x), MiniLFE(8x) | MinDSP 2x4 | 21'W x 27'L x 10'H | MiniSplit
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post #216 of 224 Old 12-09-2014, 10:22 PM
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Quote:
Originally Posted by Joel Solid View Post
I have mine on a dedicated 20amp circuit and I have equipment to monitor what the amperage the amp pulls. I have never seen the amp pull over 10amp. My speakers are 4 ohm 87db. That is playing at reference level. The only way I can see pulling more is if you were trying to pull more amps out of it with a sine wave or if you were running your speakers all in full range. Because of my subs I have all of my speakers crossed over anywhere from 60 to 80 hz.

I hope this helps!
Thank you very much for that information Joel, it helped a lot.
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post #217 of 224 Old 12-09-2014, 10:27 PM
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Originally Posted by rms8 View Post
So are there people that do NOT get a buzz on the PA 7-350? I got mine last year and just got it all connected a few months ago after finally completing my HT. It has a distinct buzz which is being generated from the amp. I have proven this by not only disconnecting all inputs cables, but also by flipping off the breakers to all other devices in the sub panel. So the only thing getting power was the Sherbourn.

The speakers which are connected are not high efficiency speakers. I get the buzz in any of them. VERY DISAPPOINTED. I called Emotive today and spoke to Chad. Not a very courteous person. He said send it back to have them look at it and emailed me an RMA. Then I found this thread with others who have the same buzzing going on.

Did anyone ever send their back in for repair????????
Sorry to hear that you're faced with that problem. Maybe you could borrow a single alternative efficient speaker and see if the problem still occurs. Hope you are able to resolve the issue.
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post #218 of 224 Old 12-10-2014, 04:10 AM
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Quote:
Originally Posted by Sam Ash View Post
Sorry to hear that you're faced with that problem. Maybe you could borrow a single alternative efficient speaker and see if the problem still occurs. Hope you are able to resolve the issue.

Unfortunately this is an issue with the amps power supply. I have 4 different speakers connected to it and all produce the same buzz which is VERY audible from the MLP. My HT is on the larger size so the MLP is a fair distance from the speakers.

*DIY ConcreteBunker Rustic Dream Build w/11' screen, 11.2chnl, 8x18" IB subs, 28.8KW*
GR Research LS-9 + LS-C | Denon AVR-4520 11.2 | Sony VPL-HW55ES | DaLite 11' screen | Sanway FP-14000 & FP-10000Q | Sherbourn PA 7-350 | Behringer iNuke NU1000DSP | 8x IB318's | Buttkicker Original(2x), LFE(2x), MiniLFE(8x) | MinDSP 2x4 | 21'W x 27'L x 10'H | MiniSplit
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post #219 of 224 Old 02-24-2015, 12:08 PM
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Quote:
Originally Posted by rms8 View Post
Unfortunately this is an issue with the amps power supply. I have 4 different speakers connected to it and all produce the same buzz which is VERY audible from the MLP. My HT is on the larger size so the MLP is a fair distance from the speakers.
So I am in the same boat. I just recently upgraded my speakers from an 87db efficiency to 99db efficiency. So what used to be barely audible a few feet away is now annoyingly audible anywhere in the room.

Were you able to get Emotiva to fix your issue?

PS - Great home theater build! Very interested in your isolated riser solution.


Last edited by Viruscwu; 02-24-2015 at 12:14 PM.
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post #220 of 224 Old 03-29-2015, 07:09 PM
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How are you guys supporting the back of these amps in a rack?

Dude, are you made of leprechauns? Cause that was awesome!

The Plains Theater Has Begun
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post #221 of 224 Old 03-29-2015, 07:50 PM
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I'm just hanging it off the rack ears.
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post #222 of 224 Old 03-30-2015, 05:36 AM
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I'm just hanging it off the rack ears.
wow! That's impressive. I built my rack using DIY rack rails. I'm a little hesitant to hang that much weight off of it.

Dude, are you made of leprechauns? Cause that was awesome!

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post #223 of 224 Old 04-06-2015, 11:29 AM
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I was wondering if anyone has experience with using one of these with difficult load speakers on all 7 channels? I am considering putting together a system with a set of McIntosh XRT20 mains, two pairs of XR19's for the rear channels. I am debating as to whether or not to run a center channel. Will this amplifier properly drive these speakers? I realize I will have to run a separate 20amp circuit which I am more than willing to do if this amplifier will work. Both the XR19's and XRT20 are power hungry and about 86 db efficient. Any help/suggestions would be appreciated.
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post #224 of 224 Old 04-07-2015, 06:54 AM
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Originally Posted by canadian_eh View Post
I was wondering if anyone has experience with using one of these with difficult load speakers on all 7 channels? I am considering putting together a system with a set of McIntosh XRT20 mains, two pairs of XR19's for the rear channels. I am debating as to whether or not to run a center channel. Will this amplifier properly drive these speakers? I realize I will have to run a separate 20amp circuit which I am more than willing to do if this amplifier will work. Both the XR19's and XRT20 are power hungry and about 86 db efficient. Any help/suggestions would be appreciated.
I don't think it will be a problem, you will need a 20amp circuit though.
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